Finding the Fourth Proportional to 726,149.61, 1,002,123.50 and 403,866

Step by Step Solution

1. Step 1: Write the proportion equation
   726,149.61 : 1,002,123.50 = 403,866 : x
2. Step 2: Convert to fraction form
   726,149.61/1,002,123.50 = 403,866/x
3. Step 3: Cross multiply
   726,149.61x = 1,002,123.50 × 403,866
4. Step 4: Simplify right side
   726,149.61x = 404,723,607,431.67
5. Step 5: Solve for x
   x = 404,723,607,431.67/726,149.61
6. Step 6: Final answer
   x = 557,355.68